How to use Telegram API
SMS Forwarder does not provide a telegram bot because it does not operate a server in order not to access the user’s personal information.
So, create your own bot and use it.
1) Search for BotFather on Telegram and start a conversation.
2) Follow steps 1-3 and create a new bot. You can name the bot anything you want.
Copy the token from step 4.
Click the link in step 5 to start a conversation with the bot.
3) Enter anything.
4) Complete the URL with the token copied in 2).
And access it through your internet browser
And copy the ChatId.
https://api.telegram.org/bot{Token}/getUpdates
ex) https://api.telegram.org/bot2121916844:AAG4AvuO9HRaPKul9I52MFHOlFygZE9x0yw/getUpdates
5) Enter the copied token and ChatId in the filter.